1.5. Units and Problem Solving Problem Set http://www.ck12.org
- Estimate the number of visitors to Golden Gate Park in San Francisco in one year. Do your best to get an
answer that is correct within a factor of 10. - Estimate the number of water drops that fall on San Francisco during a typical rainstorm.
- What does the formulaa=Fmtell you about the units of the quantitya(whatever it is)?
- Add the following vectors using the parallelogram method.
a.Answers to Selected Problems
- a. A person of height 5 ft. 11 in. is 1.80 m tall
- b. The same person is
- 180 cm
- a. 3 seconds= 1 /1200 hours b. 3x 103 ms
- 87.5 mi/hr
- c. if the person weighs 150 lb. this is equivalent to 668 N
- Pascals (Pa), which equals N/m^2
- 168 lb., 76 .2 kg
- 5 mi/hr/s
- 15.13 m
- 11.85 m
- 89,300 mm
- f. 2025 mm^2
- b. 196 cm^2
- c. 250 cm^3
- 8 : 1,each side goes up by 2 cm, so it will change by 2^3
- 5 × 1051 : 1
- 72,000 km/h
- 0.75 kg/s
- 8× 2 Ncm^3 /sec;Nis for each second starting with 0 seconds for 8 cm^3
- About 12 million
- About 1^12 trillion( 1. 5 × 1012 )
23.[a] =N/kg=m/s^2